Symphony No.4 in F minor Opus 36 (2) Peter Ilich Tchaikovsky
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Nicola Benedetti: The Silver Violin - an album guide
This tango is used in a variety of films, from Schindler's List (clearly a favourite of Benedetti's) to the Arnold Schwarzenegger stunt-fest True Lies. It seems almost too perfect a piece for Benedetti - it's fun, but there's a remarkable hidden depth and lyricism to it too.